Ask Pride And Prejudice

{
  "author": "Austen, Jane",
  "book_id": 1342,
  "chapter_detection": "heading",
  "count": 1,
  "location_note": "Chapter values are detected section indices, not guaranteed printed chapter numbers. Section 0 (text before the first detected heading) is excluded.",
  "method": "Full-text retrieval with common word variants and surrounding source text; no generated answer or summary. Up to 12 content terms, expanded into word variants, must match a local passage window.",
  "passages": [
    {
      "chapter": 43,
      "chunk_end": 655,
      "chunk_ids": [
        876,
        877,
        878
      ],
      "chunk_index": 655,
      "chunk_start": 653,
      "location": "section 43, passage #653–655",
      "source_url": "https://www.gutenberg.org/ebooks/1342",
      "text": "Elizabeth here felt herself called on to say something in vindication of his behaviour to Wickham; and, therefore, gave them to understand, in as guarded a manner as she could, that by what she had heard from his relations in Kent, his actions were capable of a very different construction; and that his character was by no means so faulty, nor Wickham’s so amiable, as they had been considered in Hertfordshire. In confirmation of this, she related the particulars of all the pecuniary transactions in which they had been connected, without actually naming her authority, but stating it to be such as might be relied on.\n\nMrs. Gardiner was surprised and concerned: but as they were now approaching the scene of her former pleasures, every idea gave way to the charm of recollection; and she was too much engaged in pointing out to her husband all the interesting spots in its environs, to think of anything else. Fatigued as she had been by the morning’s walk, they had no sooner dined than she set…"
    }
  ],
  "question": "what does Elizabeth think of Darcy",
  "ranking_scope": "Book-local relevance ranking; works over 6000 chunks use up to 300 matching corpus-index candidates before ranking. Matches are evidence to inspect, not verified answers.",
  "title": "Pride and Prejudice"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://library.forgemesh.io/ask-pride-and-prejudice' \
  -H 'content-type: application/json' \
  --data-raw '{"limit":1,"question":"what does Elizabeth think of Darcy"}'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://library.forgemesh.io/ask-pride-and-prejudice' \
  -H 'content-type: application/json' \
  --data-raw '{"limit":1,"question":"what does Elizabeth think of Darcy"}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.01 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.01" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.01 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Flibrary.forgemesh.io%2Fask-pride-and-prejudice&method=POST
const res = await pay("https://library.forgemesh.io/ask-pride-and-prejudice", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "limit": 1,
    "question": "what does Elizabeth think of Darcy"
  }),
});
console.log(res.status, await res.text());

# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.01 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.01"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://library.forgemesh.io/ask-pride-and-prejudice",
        json={
            "limit": 1,
            "question": "what does Elizabeth think of Darcy",
        },
    )
    print(res.status_code, res.text)